专家回复：The common failure is due to: inadequate thermal design, without transient and surge protection, stability issue due to interation with source impedance, etc. You need to understand what is the nature of failure and address it accordingly.
专家回复：You need to undertand why the output was low firstly. Was it due to too much load? Was it due to your source was unawarenessly blocked? Was it due to some components were failed sinking the output current? Was it due to the enable/disable fuction was not proper?
